unable to extrude a sketch on an existing surface.

[dosborn29]

up until this week i have been able draw a sketch on an existing surface ( smaller circle) to extrude the area between the inner and outer circle. Now when you try to select that area it selects only the whole disc surface. 

[hamid.sh.]

From your picture it's not possible to judge. If you share your file people can help better.

[g-andresen]

Hi,

For this purpose you have to project the body into the sketch.

Screencast

günther

[dosborn29]

Yes i know that . But you didnt have to do this before recently. If you look at some of autodesk tutorials they dont do this. It seems a waste of time to chang it.

[jhackney1972]

It is possible one of the Fusion 360 updates has removed one of your Preferences and you did not notice it.  You must have the outside circle, either an applied sketch or a project one to extrude what you desire.